AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $509,644 | +74.3% | 8,868 | +13.7% | 0.08% | +87.5% |
| Q1 2023 | $292,463 | +17.0% | 7,799 | -37.1% | 0.04% | -9.1% |
| Q2 2021 | $250,000 | -15.3% | 12,390 | -22.9% | 0.04% | +12.8% |
| Q1 2021 | $295,000 | -31.1% | 16,077 | -24.4% | 0.04% | -30.4% |
| Q4 2020 | $428,000 | -4.5% | 21,272 | -11.0% | 0.06% | -1.8% |
| Q3 2020 | $448,000 | +853.2% | 23,900 | +662.6% | 0.06% | +850.0% |
| Q1 2020 | $47,000 | +88.0% | 3,134 | +146.6% | 0.01% | +50.0% |
| Q4 2019 | $25,000 | – | 1,271 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| FRIESS ASSOCIATES LLC | 97,760 | $3,401,000 | 5.68% |
| Nantahala Capital Management | 1,000,000 | $34,790,000 | 1.74% |
| MESIROW FINANCIAL INVESTMENT MANAGEMENT - Fixed Income | 341,294 | $11,874,000 | 1.52% |
| Portolan Capital Management | 274,889 | $9,563,000 | 0.96% |
| Quantedge Capital Pte Ltd | 121,500 | $4,227,000 | 0.85% |
| SHAKER INVESTMENTS LLC/OH | 37,117 | $1,291,000 | 0.82% |
| GLOBEFLEX CAPITAL L P | 72,253 | $2,514,000 | 0.61% |
| EAM Investors, LLC | 68,855 | $2,395,000 | 0.58% |
| Hillsdale Investment Management Inc. | 197,738 | $6,879,000 | 0.55% |
| Capital Impact Advisors, LLC | 13,835 | $481,000 | 0.44% |